Ring (SFLphone) is an open-source SIP-compatible softphone and instant messenger for Linux, Microsoft Windows, OS X and Android. Developed by Savoir-faire Linux
License: Open Source
Ring is a user-friendly video and voice calling app with a strong emphasis on mobile compatibility and third-party integrations, making it suitable for a wide audience. In contrast, Ekiga is an open-source, customizable software that caters more to tech-savvy users and offers strong encryption but lacks mobile support and user-friendliness.